I am trying to empty the textbox when selected. I have multiple textboxes. How do i select the specific textbox dynamically? Below is my code:
private void newToDoTextBox_GotFocus(object sender, RoutedEventArgs e)
{
// Clear the text box when it gets focus.
newToDoTextBox.Text = String.Empty;
newToDoTextBox2.Text = String.Empty;
}
try this method please:
// use this method to your 2 textbox
private void yourTextBox_GotFocus(object sender, RoutedEventArgs e)
{
(sender as TextBox).Text = string.Empty;
}
Related
i have tried 2 solutions but neither of them work, the first on is to directly send it into the listbox but neither of them work
1.To send it directly into the listbox
private void button_Click(object sender, EventArgs e)
{
Button b = (Button)sender;
lbItems = b.Text;
}
2.The other method i tried was to send it into a a texbox first then send the the string from the texbox into the listbox, but the code breks after one button
private void button_Click(object sender, EventArgs e)
{
Button b = (Button)sender;
lbItems = b.Text;
if (txtPre.Text == " ")
{
}
else
{
lbItems.Items.Add(txtPre.Text);
txtPre.Clear();
}
}
lbItems.Items.Add((sender as Button).Text);
How can I get the text from a dynamicly created RichTextBox and a dynamicly created rtb_TextChanged Event?
e.g:
private void button1_Click(object sender, EventArgs e)
{
RichTextBox rtb = new RichTextBox();
rtb.Name = "rtb" + i;
rtb.Dock = DockStyle.Fill;
rtb.TextChanged += rtb_TextChanged;
Controls.Add(rtb);
}
void rtb_TextChanged(object sender, EventArgs e)
{
//string s = rtb.Text; //How can I get the rtb.Text?
}
You need to use the sender argument of your event handler:
void rtb_TextChanged(object sender, EventArgs e)
{
RichTextBox rtb = (RichTextBox)sender;
string s = rtb.Text;
//... etc
}
You just need to use the event parameter : sender
private void richTextBox1_TextChanged(object sender, EventArgs e)
{
RichTextBox rtb = (RichTextBox)sender;
var str = rtb .Text;
}
First rtb is not the name that you called the textbox. Since the textbox sent the message you could cast the sender to a textbox and look at its text property.
In Windows phone, how can I select all text in Textbox when the TextBox has focus?
I try setting the get focus property of Textbox:
private void TextBox_GotFocus(object sender, RoutedEventArgs e)
{
TextBox textBox = (TextBox)sender;
textBox .SelectAll();
}
What I see is I see all the text is being selected for 1-2 sec and then it goes back to cursor mode (i.e. 1 blink line).
I had this same problem on WPF and managed to solve it. Not sure if you can use what I used but essentially your code would look like:
private void TextBox_GotFocus(object sender, RoutedEventArgs e)
{
TextBox textBox = (TextBox)sender;
textBox .CaptureMouse()
}
private void TextBox_GotMouseCapture(object sender, RoutedEventArgs e)
{
TextBox textBox = (TextBox)sender;
textBox.SelectAll();
}
private void TextBox_IsMouseCaptureWithinChanged(object sender, RoutedEventArgs e)
{
TextBox textBox = (TextBox)sender;
textBox.SelectAll();
}
All events hooked up to the original textbox. If this doesn't work for you, maybe you can replace CaptureMouse with CaptureTouch (and use the appropriate events). Good luck!
You can try this code,
private void TextBox_GotFocus(object sender, RoutedEventArgs e)
{
String sSelectedText = mytextbox.SelectedText;
}
If user clicks on copy icon that comes after selection it will get copied, if you want to do it programmatically you can try this
DataPackage d = new DataPackage();
d.SetText(selectedText);
Clipboard.SetContent(d);
I would suggest doing the copying in some other event rather than gotfocus, as this will be triggered immediately after user taps on text field so this method will be called when there is no text actually entered.
protected override void OnStartup(StartupEventArgs e)
{
//works for tab into textbox
EventManager.RegisterClassHandler(typeof(TextBox),
TextBox.GotFocusEvent,
new RoutedEventHandler(TextBox_GotFocus));
//works for click textbox
EventManager.RegisterClassHandler(typeof(Window),
Window.GotMouseCaptureEvent,
new RoutedEventHandler(Window_MouseCapture));
base.OnStartup(e);
}
private void TextBox_GotFocus(object sender, RoutedEventArgs e)
{
(sender as TextBox).SelectAll();
}
private void Window_MouseCapture(object sender, RoutedEventArgs e)
{
var textBox = e.OriginalSource as TextBox;
if (textBox != null)
textBox.SelectAll();
}
I have a serie of textboxes and labels form textbox 1-9 and label 1 to 9. With a click on a any label I clear the correspondant textbox.
I created a methode but it's like a baby toy comparison to my procedures in TP or VB. There must be a shortest well structered way. Any idea wiil be very much appreciated?
What I did :)))
private void label1_Click(object sender, EventArgs e)
{
textBox1.Text = "" ;
}
private void label2_Click(object sender, EventArgs e)
{
textBox2.Text = "" ;
}
private void label3_Click(object sender, EventArgs e)
{
textBox3.Text = "" ;
}
private void label4_Click(object sender, EventArgs e)
{
textBox4.Text = "" ;
}
private void label5_Click(object sender, EventArgs e)
{
textBox5.Text = "" ;
}
private void label6_Click(object sender, EventArgs e)
{
textBox6.Text = "" ;
}
private void label7_Click(object sender, EventArgs e)
{
textBox7.Text = "" ;
}
private void label8_Click(object sender, EventArgs e)
{
textBox8.Text = "" ;
}
private void label9_Click(object sender, EventArgs e)
{
textBox9.Text = "" ;
}
You can utilize Tag property to mark controls. Then you can iterate through them (preferably starting from most parent control - form and with the use of recursion! or, if you are sure, from the container, which holds the group of controls).
// assign tag "1" to "9" to labels and texboxes
// subscribe all labels to same event label_Click
private void label_Click(object sender, EventArgs e)
{
string id = (sender as Control).Tag.ToString();
// iterate or recurse
FindTextboxWithId(id).Clear();
}
// it shouldn't be hard to write FindTextboxWithId
Other possibility is to create private arrays of controls, in the form constructor, just to ease referencing them.
public TextBox[] _textBox;
public Form1()
{
InitializeComponent();
_textBox = new TextBox[] {textBox1, texBox2, ..., textBox9};
}
// assign tag "0" to "8" to labels and texboxes
// subscribe all labels to same event label_Click
private void label_Click(object sender, EventArgs e)
{
int index = int.Parse((sender as Label).Tag);
_textBox[index].Clear();
}
Third possibility is to utilize containers, to example, TableLayoutPanel. You can create 2 column container where first column is Label's and second is TextBox'es. Then just fill 9 rows and have fun in OnClick (to find sender position, to find texbox position, to find textbox and to finally clear it).
Perhaps one handler for all and using Controls.Find:
private void label_Click(object sender, EventArgs e)
{
var label = (Label)sender;
string lastDigits = new string(label.Name.SkipWhile(c => !Char.IsDigit(c)).ToArray());
var textBox = Controls.Find("textBox" + lastDigits, true).FirstOrDefault() as TextBox;
if(textBox != null)
textBox.Text = "" ;
}
Although relying on those meaningless variable names is not best practise.
To make your code less redundant, you can loop over the controls in your application:
Control Class, so when clicking on a label you will have to search for the textBox's Tag
that you will set for each textBox.
foreach (Control C in this.Controls)
{
//Code Here...
}
Quick solution:
Rename your labels like: label_1, label_2, ... label_22, then you can use the following common event-handler for all clicks.
An improvement on this would be to just pass labelNr to a separate number, which would then use that to find the textbox by name, instead of using a swith to check all of them. I don't have time to try that now, but I'm sure you can figure it out somehow.. ;)
private void label1_Click(object sender, EventArgs e)
{
var labelNr = ((Label) sender).Name.Split('_').Last();
switch (labelNr)
{
case "1":
textBox_1.Clear();
break;
case "22":
textBox_22.Clear();
break;
}
}
Update: Seems Tim Schmelter had the answer here. To steal a small detail from him: Use Controls.Find("textBox" + labelNr, true) as he shows above instead of the switch here, and you should be set.
And a javascript solution:
<asp:TextBox ID="txt1" runat="server"></asp:TextBox>
<asp:Label ID="lbl1" runat="server" AssociatedControlID="txt1" onclick="clearTextBox(this)">Clear</asp:Label>
function clearTextBox(sender){
var assocControlId = sender.htmlFor;
var el = document.getElementById(assocControlId);
if (el)
el.value = '';
}
I would suggest you create a UserControl
Arrange a Lable and a TextBox
handle the label_click event
and uses that UserControl on your form instead.
something like this:
public class LableAndTextBox : UserControl
{
public LableAndTextBox()
{
InitializeComponents();
}
public void label_Click(object sender, EventArgs e)
{
textBox.Text = string.Empty;
}
}
Edit - make sure you create the userControl, in a seperate assembly - for compile reasons..
With two solutions of #sinatr I've created one other method because both are given an error message.
private void label_Click (object sender , EventArgs e)
{
string id = (sender as Control).Tag.ToString();
int newidx = Convert.ToInt32(id);
_textBox[newidx].Clear();
}
THIS WORKS!
Sure! I've added juste here this
namespace WindowsFormsApplication1
{
public partial class
DefBiscuit : Form
{
public TextBox[] _textBox;
And
In form_load this
_textBox = new TextBox[] { textBox1, textBox2, textBox3, textBox4, textBox5, textBox6, textBox7, textBox8, textBox9 };
If you don't like to write code much, i have a program can write it fast.
For example, if you input "lable1.Text = textbox1.Text;" and "15" the program will output into a textbox:
lable1.Text = textbox1.Text;
lable2.Text = textbox2.Text;
lable3.Text = textbox3.Text;
lable4.Text = textbox4.Text;
lable5.Text = textbox5.Text;
lable6.Text = textbox6.Text;
...
lable15.Text = textbox15.Text;
Go here to know more and download: Download Counter Replacer
I have the following code for my form:
private void txt1_Enter(object sender, EventArgs e)
{
txt1.SelectAll();
txt1.BackColor = Color.LightBlue;
}
private void txt2_Enter(object sender, EventArgs e)
{
txt2.SelectAll();
txt2.BackColor = Color.LightBlue;
}
private void txt1_Leave(object sender, EventArgs e)
{
txtThermalConductivity.BackColor = Color.White;
}
private void txt2_Leave(object sender, EventArgs e)
{
txtThermalConductivity.BackColor = Color.White;
}
There are another 20 textboxes on my form that I would like to do the same for. Is it possible to combine all of the enter events and all of the leave events so I have two events in total rather than 44 individual events?
In your Designer view, select each textbox and set the Enter and Leave events to point to a single implementation of each.
Then you can do this:
private void txt_enter(object sender, EventArgs e) {
((TextBox)sender).BackColor = Color.LightBlue;
}
private void txt_leave(object sender, EventArgs e) {
((TextBox)sender).BackColor = Color.White;
}
Also, SelectAll isn't required because you're setting the entire textbox's background color.. not the SelectionColor of a RichTextBox.
You could either add manually or iterate over all textboxes in form (extension method found here GetChildControls.
foreach (TextBox textBox in this.GetChildControls<TextBox>())
{
textBox.Enter += new EventHandler(TextBox_Enter);
textBox.Leave += new EventHandler(TextBox_Leave);
}
The above can be called from the Form's Load event.
The event listener now can look like the following by casting the sender to TextBox.
private void TextBox_Enter(object sender, EventArgs e)
{
TextBox txtBox = (TextBox)sender;
txtBox .SelectAll();
txtBox .BackColor = Color.LightBlue;
}
private void TextBox_Leave(object sender, EventArgs e)
{
TextBox txtBox = (TextBox)sender;
txtBox.BackColor = Color.White;
}
It is, just use something like the following:
private void tbLeave(object sender, EventArgs e) {
((TextBox) sender).BackColor = Color.White;
}
The set the controls event declaration to point to this function.
You can also do the same for the Leave() event.
(Just a little note to say, I much prefer to handle this kind of thing client side where possible.)